Off-axis Parabolic Optical Mirrors
Last Updated: April 1, 2025
Description
Off-axis parabolic optical mirrors are specialized reflective surfaces that are derived from a larger parent paraboloid. These mirrors are designed to focus parallel beams or collimated point sources by utilizing a section of the paraboloid that is off the main axis. This unique design allows the focal point to be separated from the optical path, providing more flexibility in optical setups.
Working Principle
The working principle of off-axis parabolic mirrors involves their ability to focus light without introducing spherical or chromatic aberrations. Unlike lenses, these mirrors reflect light in a way that maintains the integrity of the beam, ensuring high power and optical quality. The off-axis design is particularly useful because it allows for the focal point to be positioned away from the optical path, which can be advantageous in complex optical systems. This design is beneficial for applications requiring precise beam alignment and focusing, as it provides higher precision and stability.
Applications
Off-axis parabolic mirrors are particularly suitable for applications involving femtosecond pulsed lasers, where precise focusing and alignment are critical. They are also used in satellite imaging technologies, where their ability to provide a larger field of view and reduced central obscuration is advantageous. These mirrors are integral in systems that require high-quality beam focusing and alignment, such as advanced optical research and development projects.
Advantages over other Optical Mirrors
One of the primary advantages of off-axis parabolic mirrors over other types of optical mirrors is their ability to focus light without introducing spherical or chromatic aberrations. This results in more accurate focusing on a single point, which is crucial for applications requiring high precision. Additionally, these mirrors do not introduce phase delay or absorption losses, maintaining high power and optical quality. This makes them superior to lenses in applications where maintaining beam integrity is essential.
Limitations
Off-axis parabolic mirrors face limitations when aiming for a large relative aperture, which can impact the system's light-gathering ability and effectiveness in low-light conditions. Additionally, these mirrors can be more challenging to align compared to other optical components, requiring precise setup to achieve optimal performance.
Considerations
When selecting off-axis parabolic mirrors, several considerations must be taken into account. The choice of material, such as metals, glass, or specialized ceramics like SiC, can significantly impact both cost and performance. Coating options, such as metallic coatings like protected aluminum, can enhance durability and performance. Initial costs may be higher due to the complexity of manufacturing and alignment, but the long-term benefits in terms of precision and optical quality can outweigh these expenses. Durability and maintenance costs will depend on the material and coating choices, as well as the specific application requirements.
from Zygo Corporation
ZYGO's Optics business segment can custom manufacture precision CLEARCERAM ® mirrors to your exact specifications. CLEARCERAM ® mirrors are made from a glass-ceramic substrate which features ultra-low thermal expansion over a wide range of temperatures. The material is approximately 70%... [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Mirror Materials: CLEARCERAM®
- Mirror Types: Flat Mirror; Parabolic Mirror; Reflector; Spherical Mirror; Aspheric, EUV, Light-Weighted, Monolithic
from Avantier Inc.
Off-Axis Parabolic Mirrors and Their Characteristics. An off-axis parabolic mirror is a specialized optical mirror cut from a larger parabolic mirror. Parabolic mirrors collimate light, and an off-axis parabolic (OAP) mirror will do the same, and can also focus incident collimated light to a point. [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Wavelength Range: 450 to 12000
- Mirror Types: Parabolic Mirror
- Mirror Shape: Round
from Zygo Corporation
Applications. ZYGO has a long tradition of manufacturing custom-made optical mirrors for a wide variety of applications, including, but not limited to: EUV mirrors. Lightweighted mirrors. Space mirrors. Stage Components for lithographic steppers. X-ray mirrors. Defense/Aerospace. Medical/Life... [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Diameter/Width: 305 to 813
- Mirror Types: Flat Mirror; Parabolic Mirror; Reflector; Spherical Mirror; Aspheric, EUV, Light-Weighted, Monolithic
- Mirror Materials: Zerodur®; CLEARCERAM®, Cordierite, Silicon Carbide, ULE®, Silicon
from Shanghai Optics
Off Axis Parabolic Mirror for Every Application. An off axis parabolic mirror is an optical device which transforms plane waves into spherical waves and spherical waves into plane waves. This makes it useful for collimating light from a point source as well as focusing collimated light to a point. [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Mirror Types: Parabolic Mirror
from Thorlabs, Inc.
At Thorlabs, we constantly reinforce our desire to serve at the pleasure of our customers. From this comes our desire to be connected to our industry in a way that far exceeds what would typically be expected of a vendor. Thorlabs lives this core principle by seeking to enhance, at every turn, the... [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Focal Length: 7.5 to 260
- Mirror Types: Parabolic Mirror
- Second Focal Length: 15 to 152
from Daheng New Epoch Technology, Inc.
gt;96% Average Reflectance Over a Broadband Range from 800 nm to 20 µm Collimates a Point Source or Focuses a Collimated Beam without Spherical or Chromatic Aberrations Effective Focal Lengths: 15 mm to 9" (228.6 mm) Surface Roughness: <100 Å (RMS) Clear Aperture: >90% of Diameter Three Kinds... [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Wavelength Range: 800 to 20000
- Mirror Types: Parabolic Mirror
- Diameter/Width: 50.8
from Specialty Components, Inc.
Diamond turned first-surface Aluminum mirrors provide a highly efficient parabolic focus of light in the infrared range. Guaranteed at ½ , ¼ or 1/8 waveform accuracy with <16nm Ra surface finish. Select from protected Aluminum, protected Gold or untreated coatings combined with your... [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Diameter/Width: 22.86
- Mirror Types: Parabolic Mirror
- Mirror Shape: Elliptical
from Shimadzu Corporation
An off-axis parabolic mirror converts plane waves into spherical ones and vice versa with high accuracy. This aspherical mirror is indispensable for spectrometers and astronomical optical instruments which require high resolution. [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Focal Length: 125 to 787
- Mirror Types: Parabolic Mirror
- Second Focal Length: 134 to 789
from Shimadzu Corporation
This aspherical mirror, which focuses parallel light to the focus point without aberrations, or converts a point light source from the focuse point into parallel light without aberrations, is used in spectroscopic systems that require high resolution. [See More]
- Reflector / Parabolic Mirror Shape: Off Axis Paraboloid
- Focal Length: 275 to 350
- Mirror Types: Parabolic Mirror
- Second Focal Length: 279 to 351